/*
  moddict — support page
  Canvas: 700 × 1024 px (pt = px, 1mm = 2.8346px / PostScript pt)
  Margins: top/bottom 13.41mm (38px), left/right 9.16mm (26px)
  Grid: 6 columns × 8 rows
  Block: 34.57mm × 38.1mm  → 98 × 108 px
  Gutter / baseline: 12pt = 12px
  Type:
    large  18px / line-height 24px  (= 2 baselines)
    small   9px / line-height 12px  (= 1 baseline)
*/

:root {
  --fg: #000;
  --bg: #fff;
  --grid: #1FD3D3;

  --font: "univers-next-pro", "Univers Next Pro", "Univers Next",
          "Helvetica Neue", Helvetica, Arial, sans-serif;

  /* canvas */
  --page-w: 700px;
  --page-h: 1024px;
  --pad-x: 26px;   /* 9.16mm  */
  --pad-y: 38px;   /* 13.41mm */

  /* 6 × 8 grid */
  --cols: 6;
  --rows: 8;
  --block-w: 98px;   /* 34.57mm */
  --block-h: 108px;  /* 38.1mm  = 9 baselines */
  --gap: 12px;

  /* type */
  --baseline: 12px;
  --size-l: 18px;
  --lh-l: 24px;
  --size-s: 9px;
  --lh-s: 12px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; background: var(--bg); }
body {
  color: var(--fg);
  font-family: var(--font);
  font-weight: 500;
  font-size: var(--size-l);
  line-height: var(--lh-l);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

/* ---------- page (fixed canvas) ---------- */
.page {
  position: relative;
  width: var(--page-w);
  min-height: var(--page-h);
  margin: 0 auto;
  padding: var(--pad-y) var(--pad-x);
  background: var(--bg);
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--block-w));
  grid-template-rows: repeat(var(--rows), var(--block-h));
  column-gap: var(--gap);
  row-gap: var(--gap);
}

/* ---------- header (row 1) ---------- */
.site-header {
  grid-column: 1 / -1;
  grid-row: 1;
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--block-w));
  column-gap: var(--gap);
  align-items: start;
}
.brand {
  grid-column: 1 / span 1;
  font-size: var(--size-l);
  line-height: var(--lh-l);
}
.brand .logo {
  display: block;
  width: var(--block-w);
  height: auto;
}
.site-nav {
  grid-column: 2 / -1;
  display: grid;
  grid-template-columns: repeat(5, var(--block-w));
  column-gap: var(--gap);
  font-size: var(--size-l);
  line-height: var(--lh-l);
}
.site-nav .nav-firmware { grid-column: 2 / span 1; }
.site-nav .nav-manual   { grid-column: 3 / span 1; }
.site-nav .nav-store    { grid-column: 5 / span 1; }

/* ---------- main / hero (rows 2–7) ---------- */
.site-main {
  grid-column: 1 / -1;
  grid-row: 2 / span 6;
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--block-w));
  grid-template-rows: repeat(6, var(--block-h));
  column-gap: var(--gap);
  row-gap: var(--gap);
}
.hero {
  grid-column: 1 / -1;
  grid-row: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- footer (row 8) ---------- */
.site-footer {
  grid-column: 1 / -1;
  grid-row: 8;
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--block-w));
  column-gap: var(--gap);
  align-content: start;
}
.footer-col {
  grid-column: span 2;
  display: block;
}
.footer-col .num {
  display: block;
  font-size: var(--size-s);
  line-height: var(--lh-s);
}
.footer-col .head {
  display: block;
  font-size: var(--size-l);
  line-height: var(--lh-l);
}
.footer-col .sub {
  display: block;
  font-size: var(--size-s);
  line-height: var(--lh-s);
}

/* ---------- grid overlay (dev only) ---------- */
.grid-overlay {
  position: absolute;
  top: var(--pad-y);
  left: var(--pad-x);
  width: calc(var(--page-w) - var(--pad-x) * 2);
  height: calc(var(--page-h) - var(--pad-y) * 2);
  pointer-events: none;
  display: none;
  z-index: 100;
}
.page.show-grid .grid-overlay { display: block; }
.grid-overlay .cells {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--block-w));
  grid-template-rows: repeat(var(--rows), var(--block-h));
  column-gap: var(--gap);
  row-gap: var(--gap);
}
.grid-overlay .cell {
  outline: 1px solid var(--grid);
  background: rgba(31, 211, 211, 0.05);
}
.grid-overlay .baselines {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent calc(var(--baseline) - 1px),
    rgba(31, 211, 211, 0.18) calc(var(--baseline) - 1px),
    rgba(31, 211, 211, 0.18) var(--baseline)
  );
}

/* ---------- grid toggle ---------- */
.grid-toggle {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 200;
  font-family: var(--font);
  font-weight: 500;
  font-size: var(--size-s);
  line-height: var(--lh-s);
  padding: 4px 10px;
  background: #000;
  color: #fff;
  border: 0;
  cursor: pointer;
  letter-spacing: 0.04em;
}
.grid-toggle:hover { background: #333; }